1. VA New England Health Care Division, Providence, RI, Department of Surgery, Center for Restorative and Regenerative Medicine; Limb Preservation and Wound Care Research; Providence RI USA
2. Department of Surgery; Boston Medical Center and Boston University School of Medicine; Boston MA USA
3. VA New England Health Care Division, Providence, RI, Department of Surgery; Center for Restorative and Regenerative Medicine; Providence RI USA